4D Molecular Therapeutics, Inc.
US ˙ NasdaqGS ˙ US35104E1001

SecurityFDMT / 4D Molecular Therapeutics, Inc.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership3,062,596 shares
Ownership 6.60%
BlackRock, Inc. ownership in FDMT / 4D Molecular Therapeutics, Inc.

2025-10-17 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3,062,596 shares of 4D Molecular Therapeutics, Inc. (US:FDMT). This represents 6.6 percent ownership of the company. In their previous filing dated 2025-04-17 , BlackRock, Inc. had reported owning 3,615,316 shares, indicating a decrease of -15.29 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2025-10-17 2025-10-17 13G/A 3,615,316 3,062,596 -15.29 6.60 -15.38
2025-04-17 2025-04-17 13G/A 4,965,019 3,615,316 -27.18 7.80 -27.10
2024-12-06 2024-12-06 13G/A 4,868,789 4,965,019 1.98 10.70 13.83
2024-11-08 2024-11-08 13G/A 4,868,789 4,868,789 0.00 9.40 0.00
2024-10-21 2024-10-21 13G/A 4,868,789 9.40
2024-01-25 2024-01-25 13G/A 2,508,632 3,464,587 38.11 8.10 5.19
2023-01-31 2023-01-31 13G/A 2,087,682 2,508,632 20.16 7.70 18.46
2022-02-04 2022-02-04 13G 2,087,682 6.50

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,145,303 80,427 1.98 38,593 26.59 0.0001
2026-02-12 2025-12-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,064,876 195,746 5.06 30,487 -9.33 0.0005
2025-11-12 2025-09-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 3,869,130 -141,625 -3.53 33,623 125.97 0.0006
2025-08-12 2025-06-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,010,755 -536,397 -11.80 14,880 1.31 0.0003
2025-05-02 2025-03-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,547,152 -374,169 -7.60 14,687 -46.42 0.0003
2025-02-07 2024-12-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,921,321 52,532 1.08 27,412 -47.92 0.0006
2024-11-13 2024-09-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,868,789 -28,108 -0.57 52,632 -48.80 0.0011
2024-08-13 2024-06-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,896,897 612,349 14.29 102,786 -24.70 0.0023
2024-05-10 2024-03-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 4,284,548 819,961 23.67 136,506 94.47 0.0032
2024-02-13 2023-12-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 3,464,587 340,911 10.91 70,193 76.52 0.0018
2023-11-13 2023-09-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 3,123,676 209,246 7.18 39,764 -24.49 0.0011
2023-08-11 2023-06-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,914,430 363,695 14.26 52,664 20.11 0.0015
2023-05-12 2023-03-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,550,735 42,103 1.68 43,847 -21.30 0.0013
2023-02-13 2022-12-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,508,632 278,233 12.47 55,717 210.69 0.0017
2022-11-14 2022-09-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,230,399 47,641 2.18 17,933 17.70 0.0006
2022-08-12 2022-06-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,182,758 52,532 2.47 15,236 -52.69 0.0005
2022-05-12 2022-03-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,130,226 42,544 2.04 32,208 -29.68 0.0009
2022-02-10 2021-12-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 2,087,682 649,319 45.14 45,803 18.07 0.0012
2021-11-09 2021-09-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 1,438,363 706,953 96.66 38,794 120.27 0.0011
2021-08-11 2021-06-30 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 731,410 184,006 33.61 17,612 -25.83 0.0005
2021-05-07 2021-03-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 547,404 541,476 9,134.21 23,747 9,553.25 0.0007
2021-02-05 2020-12-31 13F 4D MOLECULAR THERAPEUTICS IN COM 35104E100 5,928 5,928 246 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.